Features :
- Nominal Size 21.5x23.25x1. Actual Size 21.5 x 23.25 x 1
- MERV 11 Rated. High-efficiency air filter
- Traps micro-particles associated with allergies like ragweed and pollen
- Pack of 4 Filters
- Each filter lasts up to 90 days
Item# : SPM14664889832
Model # : KG21a5X23a25X1A